Toilet flushing: if it’s yellow let it mellow

Water is essential for our survival. We need to drink 1.5 liters (50.7 fl. oz.) of water a day and get the balance of our requirement (1 liter/33.8 fl. oz.) from other food and beverages combined. Go 3 days without this precious resource and you will be as dry as dust.

Yet each time we flush the loo, by most calculations (13.6 liters per flush), we waste nearly 10 days of drinking water for one person: that stinks!

It is time to act and the solutions are not hard to find: composting toilet, pee in the shower, etc. Or, you can apply this wise Anglo-Saxon tip: “if it’s yellow, let it mellow. If it’s brown, flush it down”.



Each time without flushing, you will save approximately:

  • 6 – 5 gallons / 10-20 liters of water
  • 800 Watts of power (sanitation and distribution of water)
  • 54 oz / 72 grams of CO2 equivalent (power production)
  • 2 ft2 / 1.6 m2 ecological footprint (virtual forest required to absorb CO2 emissions)


Dear readers: We are sorry for not making more jokes in this article but it was way too crappy.


(*) These data are statistically estimated for personal use only. Any use for scientific, business or legal purposes is strongly discouraged.

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